617
This number is a prime.
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The smallest prime that has an expression in more than one
way as the repdigit sum of the four prime digits (2, 3, 5,
7), in each case with the summands concatenating to a prime
in this digit order: 617 = 22 + 33 + 555 + 7 = 222 + 333 +
55 + 7 with 22335557 and 222333557 being primes. [Beedassy]
Submitted: 2009-08-24 07:00:17; Last Modified: 2009-08-24 22:50:13.
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